wrote in message
...
One of the shopping channels is currently selling this. It's just a
wire wrapped around the rising main pipe, presumably creating a
magnetic field.

You just switch it on and leave it.

Anyone tried one of these or anything similar?

Many people have tried and used such devices.

It will not work.

Scale Wizards website states "that water remains chemically unchanged". So
there you have the proof. £90 to do sod all.

Adam